California earthquakes

M1.7 earthquake 16km NW of Pinnacles, CA

A magnitude 1.7 earthquake struck 16km NW of Pinnacles, CA on Sun, May 9, 2021, 8:33 PM PDT (03:33 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M3.7 2km WSW of Los Banos, CA. This one was a foreshock.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
1.7 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
2021-05-10 03:33:18 UTC
Depth
6.4 km (4.0 mi), shallow
Epicenter
36.646° N, 121.256° W
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 0.3 km horizontally, 0.6 km in depth
Magnitude uncertainty
±0.19
Depth from
From location
Station coverage gap
106°
Stations used
20

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 129 in the 60 days after this one and 70 in the 30 days before it.

After

The first 60 of 129.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc73560425. Read Sat, Oct 3, 2026, 2:00 PM UTC.